641187 - Text on path positioning at zero startOffset

Status: RESOLVED FIXED

(Core :: SVG, defect)

Description

[Jan Tošovský]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0

When text (a single character) is positioned on the path with text-anchor set to middle and startOffset set to zero percent, the letter is missing at all as can be seen in the URL provided.

Reproducible: Always

Steps to Reproduce:
1. Open the URL
Actual Results:  
Missing letter.

Expected Results:  
I would expect MSIE 9RC/Opera 11 behaviour (letter is displayed)

Comment 1

[Robert Longson [:longsonr]]

Removing the whitespace between the <text> and <textPath> elements makes the M display where you want it. I.e.

<text><textPath xlink:href="#circle" startOffset="0%" font-size="18px" fill="red" text-anchor="middle">M</textPath></text>

Comment 2

[Jan Tošovský]

Thanks, it fixes it, but in other browser it works even with whitespace. I would expect rendering whitespace just inside textPath element, not outside. Either FF or MSIE/Opera/Batik way is correct. I tend to believe the majority ;-)

Comment 3

[Robert Longson [:longsonr]]

The whitespace must be rendered, but I don't think it's clear from the SVG specification where the final whitespace should be drawn. Do you continue from where the M is drawn or do you go back to where the initial whitespace was drawn. Batik and Opera do things differently last I checked but they both do draw the whitespace.

SVG specification beats the majority ;-) so if you can find something in there that supports your whitespace case then that would be much better.

Comment 4

[Cameron McCormack (:heycam)]

The nsSVGTextFrame2 code sets x = y = 0 for the first character after a <textPath>, if there is nothing else that has given it an explicit position.  IIRC.  I don't believe the spec says anything about this yet.

With svg.text.css-frames.enabled = true, the Ms render, but they don't look exactly centered on the top of the curves.  So maybe there is something wrong with the new anchoring code on text paths.

Comment 5

[Robert Longson [:longsonr]]

bug 956513 makes it centered so it all works now.